Bad Data Error - cryptoapitransform

[David Turner]

I have the same ASP.NET application that is installed in two locations on the
same web server, each with it's own application in IIS. One instance is our
Intranet and uses Windows authentication, the other is our external website
and uses Forms authentication.

User's can log into each instance just fine, and as long as they only access
one of the applications everything works fine.

However, if a user logs into one application and then tries to access the
other without first closing their browser and restarting, they get the
following error...

Bad Data.

Description: An unhandled exception occurred during the execution of the
current web request. Please review the stack trace for more information about
the error and where it originated in the code.

Exception Details: System.Security.Cryptography.CryptographicExceptio n: Bad
Data.

Source Error:

An unhandled exception was generated during the execution of the current web
request. Information regarding the origin and location of the exception can
be identified using the exception stack trace below.

Stack Trace:

[CryptographicException: Bad Data.
]
System.Security.Cryptography.CryptoAPITransform._D ecryptData(IntPtr hKey,
Byte[] rgb, Int32 ib, Int32 cb, Boolean fDone) +0

System.Security.Cryptography.CryptoAPITransform.Tr ansformFinalBlock(Byte[]
inputBuffer, Int32 inputOffset, Int32 inputCount) +805
System.Security.Cryptography.CryptoStream.FlushFin alBlock() +40
System.Web.Configuration.MachineKey.EncryptOrDecry ptData(Boolean
fEncrypt, Byte[] buf, Byte[] modifier, Int32 start, Int32 length) +139
System.Web.Security.FormsAuthentication.Decrypt(St ring encryptedTicket)
+114
Solomon.Global.Application_AuthenticateRequest(Obj ect sender, EventArgs
e) +632

System.Web.SyncEventExecutionStep.System.Web.HttpA pplication+IExecutionStep.Execute() +60
System.Web.HttpApplication.ExecuteStep(IExecutionS tep step, Boolean&
completedSynchronously) +87



What do I need to do to prevent this error

[MichaelDH]

Hello David,

sorry I haven't any glue too.
But I've the same issue and may be you solved it already and help me.

Cheers, Michael

"David Turner" wrote:

> I have the same ASP.NET application that is installed in two locations on the
> same web server, each with it's own application in IIS. One instance is our
> Intranet and uses Windows authentication, the other is our external website
> and uses Forms authentication.
>
> User's can log into each instance just fine, and as long as they only access
> one of the applications everything works fine.
>
> However, if a user logs into one application and then tries to access the
> other without first closing their browser and restarting, they get the
> following error...
>
> Bad Data.
>
> Description: An unhandled exception occurred during the execution of the
> current web request. Please review the stack trace for more information about
> the error and where it originated in the code.
>
> Exception Details: System.Security.Cryptography.CryptographicExceptio n: Bad
> Data.
>
> Source Error:
>
> An unhandled exception was generated during the execution of the current web
> request. Information regarding the origin and location of the exception can
> be identified using the exception stack trace below.
>
> Stack Trace:
>
> [CryptographicException: Bad Data.
> ]
> System.Security.Cryptography.CryptoAPITransform._D ecryptData(IntPtr hKey,
> Byte[] rgb, Int32 ib, Int32 cb, Boolean fDone) +0
>
> System.Security.Cryptography.CryptoAPITransform.Tr ansformFinalBlock(Byte[]
> inputBuffer, Int32 inputOffset, Int32 inputCount) +805
> System.Security.Cryptography.CryptoStream.FlushFin alBlock() +40
> System.Web.Configuration.MachineKey.EncryptOrDecry ptData(Boolean
> fEncrypt, Byte[] buf, Byte[] modifier, Int32 start, Int32 length) +139
> System.Web.Security.FormsAuthentication.Decrypt(St ring encryptedTicket)
> +114
> Solomon.Global.Application_AuthenticateRequest(Obj ect sender, EventArgs
> e) +632
>
> System.Web.SyncEventExecutionStep.System.Web.HttpA pplication+IExecutionStep.Execute() +60
> System.Web.HttpApplication.ExecuteStep(IExecutionS tep step, Boolean&
> completedSynchronously) +87
>
>
>
> What do I need to do to prevent this error